Sparkly and colour changing! A fabulous DK by Stylecraft which knits to a standard tension so you can use it for just about any DK pattern you care to use (usual caveat applies of CHECK YOUR TENSION!).
98% acrylic, 2% polyester (the sparkly bits, soft not like in olden days when metallic bits were actual metal and a bit spiky!), machine washable at 30 degrees, you can even tumble-dry it on cool, each 100g ball has 231 metres of gorgeousness on it.